PHYSICS
HIGH SCHOOL

Answer: Kinetic energy is equal to 1/2 mv^2

KE=(1/2)(mv^2)

So if the mass increases and everything else stays the same, then the kinetic energy also increases.

KE=(1/2)(mv^2)

So if the mass increases and everything else stays the same, then the kinetic energy also increases.

HIGH SCHOOL

A cubic centimeter can be expressed as ____. a.

ccm

c.

ct

b.

cm3 or cc

d.

ccm3

B. should be your answer!

B. cm3 or cc is what a cubic centimeter should be expressed as.

MIDDLE SCHOOL

The hammering on a train track is often heard twice by workers farther down the track; first as the sound travels through the steel and second as the sound travels through the air. This suggests which graph is true?

The hammering on a train track is often heard twice by workers farther down the track; first as the sound travels through the steel and second as the sound travels through the air. Therefore, graph D is true.

What is sound?Sound is a biomechanical disturbance from an equilibrium condition that travels via an elastic material medium. A entirely subjective definition of sound, as perceived by the ear, is also viable, but it is not especially informative and is overly limited, because it is important to speak of noises that are not heard by the human ear, like those produced by dog whistles or sonar technology.

The qualities of sound waves should be the starting point for any study of sound. There are two fundamental types of waves: transverse and longitudinal, which are distinguished by how the wave propagates. The sound speed in steel and any solid is quicker than the sound speed in air. This implies that the steel on the graph ought to be the bigger of the two.

Therefore, graph D is true.

To learn more about sound, here:

brainly.com/question/1502894

#SPJ6

Answer:

Graph D

Explanation:

The speed of sound in steel or any solid is faster than the speed of sound through air. This means the steel bar on the graph graph should be the larger of the two.

COLLEGE

A pulse is transmitted down a long string made of two pieces of different materials. If the wavelength of the pulse received at the end is longer than at the beginning, this implies that the speed of the pulse in the second part of the string is

Options

1. the same as in the first.

2.greater than in the first

3.less than in the first.

4.Unable to determine

Answer

The answer is 2. Greater than in the first

Explanation

The speed of a wave v is related to its wavelength λ by the formulav=f λ, where f is the frequency of the wave. The frequency will not change when the wave passes into a second medium, so

λ2>λ1

Fλ1>fλ2

Since f>0

And V2>v1

MIDDLE SCHOOL

Electric field strength _____________ with distance?

Answer:

Decrease

Explanation:

The farther an object is the weaker the electric field is

HIGH SCHOOL

In which of the following forms of energy might you find specially placed tiles on the floor?

Answer:

Passive solar

Explanation:

Kinetic energy.Kinetic energy is the energy of motion. Floor tiles with electromechanical technology produce electricity when people step on them because movement results in a rotatory motion that generates electrical energy. Kinetic tiles usually work on process known as the piezoelectric effect.^-^

MIDDLE SCHOOL

The distance between one point on a compression and the corresponding point on the next compression in a sound wave is called a

It is called "wavelength".

In fact, the wavelength is defined as the distance between two consecutive crests of a wave. In the case of a speed wave, we can see the compression points as the crests of the wave, so the distance between two consecutive compression points corresponds to the wavelength.

In fact, the wavelength is defined as the distance between two consecutive crests of a wave. In the case of a speed wave, we can see the compression points as the crests of the wave, so the distance between two consecutive compression points corresponds to the wavelength.

Its called the wavelength!

MIDDLE SCHOOL

Which element is nuclear fusion least likely to produce

Nuclear fusion is the process by which nucleus of 2 elements fuse to form the heavier elements. The hydrogen atom is least likely to produce by nuclear fusion.

Nuclear Fusion:

It is the process by which nucleus of 2 elements fuse to form the heavier elements.

- The hydrogen is lightest element in the universe that is composed of a proton.

- Two nucleus of two hydrogen atoms are fused to form an helium nucleus.

Therefore, the hydrogen atom is least likely to produce by nuclear fusion.

To know more about Nuclear fusion,

brainly.com/question/10114466

Nuclear fusion is least likely to produce Hydrogen.

This is because nuclear fusion uses hydrogen. The atoms in hydrogen are used to create heavier elements. Therefore hydrogen can not make hydrogen.

Hydrogen has a mass of 1 ... The lightest element that the fusion would be able to make would be helium.

MIDDLE SCHOOL

At t = 0 seconds, a cart is moving with a velocity of 10 cm/s and an acceleration of 4.0 (cm/s)/s. Assuming its acceleration stays at this value, what will its velocity be 7.0 seconds later?

V = u + at = 10 cm/s + (4 cm/s^2)×(7s) = 38 cm/s

MIDDLE SCHOOL

an object has a mass of 13.5 kilograms. what force is required to accelerate it to a rate of 9.5m/s²

128.25 N is the force required to accelerate an object of mass 13.5 kg to a rate of

Explanation:

So the force required to accelerate an object with certain mass and acceleration can be determined with the help of Newton's second law of motion. As according to this law, the net force required to act on any object to move that object should be directly proportional to the product of mass of the object with the acceleration of the object.

So 128.25 N is the force required to accelerate an object of mass 13.5 kg to a rate of